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    <h1>标题标签</h1>
    <h1>标题一共六级选,</h1>
    <h2>文字加粗一行显.</h2>
    <h3>由大到小依次减,</h3>
    <h4>从重到轻随之变.</h4>
    <h5>语法规范书写后,</h5>
    <h6>具体效果刷新见.</h6> 
                ------pink老师
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